Condensed Consolidated Statement of Changes in Stockholders' Equity (Deficit) - USD ($) shares in Thousands, $ in Thousands	Total	Adjustment to Opening Retained Earnings Related to Adoption ASC Topic 842	Preferred Stock Series D	Preferred Stock Series C	Common Stock	Treasury Stock Amount	Additional Paid-In Capital	Accumulated Deficit	Accumulated Deficit Adjustment to Opening Retained Earnings Related to Adoption ASC Topic 842
Balance, beginning of period at Jun. 30, 2019	$ 2,708	$ 230			$ 190,571	$ (4,129)	$ 7,964	$ (191,698)	$ 230
Balance (in shares) at Jun. 30, 2019			281	281	5,775
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201602Member							us-gaap:AccountingStandardsUpdate201602Member
Issuance of shares	$ 321						321
Issuance of shares (in shares)					146
Stock-based compensation	78						78
Restricted stock issuance	26				$ 26
Restricted stock issuance (in shares)					5
Net loss	(2,068)							$ (2,068)
Balance, end of period at Sep. 30, 2019	1,295				$ 190,597	(4,129)	8,363	(193,536)
Balance (in shares) at Sep. 30, 2019			281	281	5,926
Balance, beginning of period at Jun. 30, 2019	2,708	$ 230			$ 190,571	(4,129)	7,964	(191,698)	$ 230
Balance (in shares) at Jun. 30, 2019			281	281	5,775
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible List]		us-gaap:AccountingStandardsUpdate201602Member
Net loss	(4,151)
Balance, end of period at Dec. 31, 2019	247				$ 190,598	(4,129)	9,397	(195,619)
Balance (in shares) at Dec. 31, 2019			281	281	6,348
Balance, beginning of period at Sep. 30, 2019	1,295				$ 190,597	(4,129)	8,363	(193,536)
Balance (in shares) at Sep. 30, 2019			281	281	5,926
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares	952				$ 1		951
Issuance of shares (in shares)					433
Stock-based compensation	97						97
Restricted stock cancellation	(11)						(11)
Restricted stock cancellation (in shares)					(11)
Forfeiture of stock-based compensation	(3)						(3)
Net loss	(2,083)							(2,083)
Balance, end of period at Dec. 31, 2019	247				$ 190,598	(4,129)	9,397	(195,619)
Balance (in shares) at Dec. 31, 2019			281	281	6,348
Balance, beginning of period at Jun. 30, 2020	625				$ 190,599	(4,129)	13,934	(199,779)
Balance (in shares) at Jun. 30, 2020			281		7,850
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock offering costs	(2)						(2)
Stock-based compensation	49						49
Restricted stock cancellation	(5)						(5)
Restricted stock cancellation (in shares)					(6)
Net loss	(2,111)							(2,111)
Balance, end of period at Sep. 30, 2020	(1,444)				$ 190,599	(4,129)	13,976	(201,890)
Balance (in shares) at Sep. 30, 2020			281		7,844
Balance, beginning of period at Jun. 30, 2020	625				$ 190,599	(4,129)	13,934	(199,779)
Balance (in shares) at Jun. 30, 2020			281		7,850
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(3,733)
Balance, end of period at Dec. 31, 2020	18,810				$ 190,610	(4,129)	35,841	(203,512)
Balance (in shares) at Dec. 31, 2020			281		18,541
Balance, beginning of period at Sep. 30, 2020	(1,444)				$ 190,599	(4,129)	13,976	(201,890)
Balance (in shares) at Sep. 30, 2020			281		7,844
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares	21,830				$ 11		21,819
Issuance of shares (in shares)					10,714
Stock-based compensation	47						47
Restricted stock cancellation	(1)						(1)
Restricted stock cancellation (in shares)					(17)
Net loss	(1,622)							(1,622)
Balance, end of period at Dec. 31, 2020	$ 18,810				$ 190,610	$ (4,129)	$ 35,841	$ (203,512)
Balance (in shares) at Dec. 31, 2020			281		18,541